I am using fiberglass and resin to do my patch work and i didn't put enough hardenedr in the resin help?

there are a couple of options: If you've used polyester resin: 1) If the patch is small, scrape it off and wipe up the residue with a cloth soaked in acetone. 2) If there is a lot of work done, you can paint the patches with hardener. If you don't have a lot of hardener, go to a marine store and get a small bottle of MEK (Methyl-Ethyl-Ketone). This is the hardener chemical. Paint the patch with a thin coat of MEK. Wait overnight. If the patch is tacky or still soft recoat your work the next day with a 'hot batch' of resin. Double the concentration of hardener in the resin and recoat your work. Either way, you'll have to wait extra time for the patch to harden enough to sand. In all reality, the patch will harden given enough time.

sand it down whin it dries and put another layer on it intell you like it

Do not use MEK as suggested earlier it is a solvent. You need MEK-P that is your hardner. Sand lightly wipe down with acetone and reglass. That may solve your problem. I would remove the problem glass work and start over. That way you it is done correctly. Also never use polyester resin for patch work of any kind. vynlester or epoxy. It will cost more but will be done again correctly.

Russell, Sorry my friend but you are undoubtably in a very sticky situation (pun intended) LOL and I know it's not funny... Only thing you can do is take enough acetone to rid your patch work of all that resin. I know, the resin is expensive, the acetone is not cheap - all that is a real pain in your wallet as well as that part of you that sits on it... And you are certainly right about one thing - it will not dry. It furthermore, will not just go away in time. I have been building boats for many -many years now, and if there are two things I have learned, it is make sure those resin / hardner measures are pretty much exact, and not to set and leave my coffee cup on any horizontal surface I just laminated with epoxy. lol Course, I know I don't have to warn you about Acetone being about as flamable as a forest fire. John

Remove the failed application and start over. Sorry.

I have had that happen before and used acetone and hardener mixed together if the glass isn't to thick spray all over the surface Wear protection and respirator.Don't used near open flame.Heat and dry air will speed up the process cool air slows down the hardening.Heat lamps.But U will have to be there or there might be nothing in the morning but ashes.